Illumination for coherent soft X-ray applications: the new X1A beamline at the NSLS

Winn, B.; Ade, H.; Buckley, C.; Feser, M.; Howells, M.; Hulbert, S.; Jacobsen, C.; Kaznacheyev, K.; Kirz, J.; Osanna, A.; Maser, J.; McNulty, I.; Miao, J.; Oversluizen, T.; Spector, S.; Sullivan, B.; Wang, Y.; Wirick, S.; Zhang, H.

doi:10.1107/S0909049500012942

Figure 1
Calculation of the effect of partially coherent illumination of the zone plate on image quality and resolution for a zone plate with a central stop of half the zone plate diameter. (a) Contours of the modulation transfer function as a function of the coherence parameter, p (equal to the source size multiplied by the full-angle accepted divided by the wavelength λ), and the normalized spatial frequency (spatial frequency divided by λ/4NA, where NA is the numerical aperture). (b) Surface rendering of the point spread function as a function of the coherence parameter, p, and the radial coordinate normalized to the Rayleigh resolution. Full spatial resolution is preserved for p ≤ 1.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 7| Part 6| November 2000| Pages 395-404

doi:10.1107/S0909049500012942

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